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Table 8 Phenotypic variation explained (R 2 ) by individual and combined effects of lcyE and crtRB1 alleles

From: Marker-trait association analysis of functional gene markers for provitamin A levels across diverse tropical yellow maize inbred lines

Genotype combination* No. of loci per genotype No. of unique genotypes R2**
lut zeax βcry βcar pva tcar βbr/αbr βcar/βcry βcar/zeax βcar/all
1. lcyE:5′TE, SNP (216), 3′TE; +crtRB1: 5′TE, Indel4, 3′TE 6 34 0.68 0.42 0.44 0.83 0.71 0.38 0.52 0.89 0.77 0.77
2. lcyE: 5′TE, SNP (216), 3′TE 3 14 0.42 0.22 NS 0.24 0.23 0.24 0.30 0.23 0.22 0.20
3. crtRB1: 5′TE, Indel4, 3′TE 3 10 0.24 0.35 0.28 0.63 0.48 NS 0.23 0.71 0.60 0.50
  1. *Names and symbols of polymorphic sites and their allelic variants are described in Table 2. **R2 from combined ANOVA computed for each of the 3 haplotype scenarios across 2 years. NS, non-significant at alpha 0.5, the rest are significant at alpha < 0.0001. Abbreviation of carotenoids’ names described under Table 2 and 3.